documents: EPA-HQ-OAR-2007-0492-0023

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id agency_id docket_id title document_type subtype posted_date posted_year posted_month comment_start_date comment_end_date last_modified fr_doc_num open_for_comment withdrawn object_id
EPA-HQ-OAR-2007-0492-0023 EPA EPA-HQ-OAR-2007-0492 Particulate Matter National Ambient Air Quality Standards: Scope and Methods Plan for Health Risk and Exposure Assessment. EPA-452/P-09-002. February 2009 Supporting & Related Material Publication - USEPA 2009-08-19T04:00:00Z 2009 8     2009-08-19T16:09:00Z   0 0 0900006480a0c756

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